Food box insert



FIG. 1 is a bottom perspective view of a food box insert;

FIG. 2 is a first end view thereof;

FIG. 3 is a second end view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a top perspective view of the insert in a non-claimed food box thereof.

The broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a food box insert, as shown and described. 